New Era Public School

Holiday Homework (2014-15)

Class XII

Informatics Practices (065)

Chapter 1,2 and Project Work

Q1. Answer the following questions

(b) / A school would like to go in for network of all the computers .Which topology would you suggest and why?
(c) / Name these:
(i)It is a software package that allows people to send electronic mail along a network of computers and workstation.
(ii)It is a network topology in which there are bi-directional links between each possible node.
(d) / Write two advantages and two disadvantages of the following network topologies:
(i)Star (ii) Tree
(e) / Compare and Contrast Free software and Open Source software.
(f) / What are the different ways that help you to type the Indian script on a computer ?
(h) / For what are these software used ?
(i)Linux (ii) PHP

Q2.Answer the following questions

1: Raghav is using software, which has been downloaded from internet and is available for one month. After one month he has to pay the license fee for further use. What software is Raghavusing?

2: Which protocol is used for the transfer of Hyper Text documents on the internet?

3: Arrange the following communication channels in ascending order of their data transmission rates.

ETHERNET CABLE, OPTICAL FIBER, TELEPHONE CABLE, COAXIAL CABLE

4: What do you understand by Network Topology? Name the most popular topologies.

Q3.Answer the following questions

(a) Which protocol is used for the transfer of hypertext document on the Internet?
(b) Which transmission medium should be used to transfer data across two continents at very high speed? (c) Two doctors in the same room have connected their palm tops using Bluetooth for working on a group presentation. Out of the following , what kind of network have they formed? LAN,WAN,MAN,PAN

(d) Which of the following software are Open Source :

Linux, MS Windows 7, PhotoShop, MySQL.

(e) Distinguish between Open Source Software and Proprietary Software with reference to
customizability of the software.

(f) Name any four Indian Scripts included in Unicode.

(g) Mamta says that the following numbers indicate an address :

208.77.188.166

What is the above address called ? to which object /device is it assigned?

Q4. Answer the following questions:

(i) Differentiate between a Hub and a Switch.

(ii) Expand the following terms:

a)OSS

b)ODF

c)TCP/IP

d) FSF

(iii)What do you mean by Denial of Service attacks?

(vi)Give an example of MAC and IP address.

Q5 . Answer the following questions.
a) Mr. Abhinav wants to implement a network using less cable length and the data should be transmitted in one direction only. Name the topology and direction of data transmission.
b) Explain the uses of the following devices in networking-
i) Switch ii) Repeater
c) What do you mean by Communication Channel? Name any two.
d) Ms. Kiran has downloaded software from the internet. It can be distributed and freely used by any one. The source code is not available. Name the software downloaded by her.
e) Write any two preventive measures for network security.
f) Write any two advantages of ‘open standard’.
g) Differentiate between Phonetic Text Entry and Key map based Entry of Indian language text.

Q 6.

(a)An organization is planning to link its sale counters situated in various parts of the

same city Which type of network out of LAN, MAN or WAN will be formed?

Justify your answer.

(b)What are the various physical media used for data transmission in a network system?

Arrange them according to their data transmission speed.

(c)Write the names of different topologies.

(d)Write short notes on

  • GNU & FSF
  • Proprietary & Shareware Software
  • Unicode

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